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Commitments and Contingencies, Asbestos (Details) - Asbestos [Member]
$ in Millions
9 Months Ended 12 Months Ended 217 Months Ended
Feb. 28, 2019
USD ($)
Sep. 30, 2019
USD ($)
Claim
Dec. 31, 2018
USD ($)
Sep. 30, 2019
USD ($)
Claim
Asbestos [Abstract]        
Pending claims, approximate number | Claim   1,500   1,500
Payments for settled claims       $ 30.5
Compensatory damages, amount of company responsibility $ 7.6      
Litigation settlement accrued interest rate 10.00%      
Minimum [Member]        
Asbestos [Abstract]        
Range of possible loss   $ 52.0 $ 46.7 52.0
Incremental pre-tax provision   9.7    
Increase in the range of possible loss     5.3  
Maximum [Member]        
Asbestos [Abstract]        
Range of possible loss   90.6   90.6
Increase in the range of possible loss     6.7  
Discontinued Operations [Member]        
Asbestos [Abstract]        
Incremental pre-tax provision     $ 10.1  
Discontinued Operations [Member] | Minimum [Member]        
Asbestos [Abstract]        
Range of possible loss   50.6   50.6
Discontinued Operations [Member] | Maximum [Member]        
Asbestos [Abstract]        
Range of possible loss   $ 85.2   $ 85.2